On July 27, 1864, Private Richard Monnahan was discharged from G Company of the 16th Regiment, Massachusetts Infantry, on the day the entire regiment was mustered out. According to his discharge form from the United States Pension Office, Monnahan was 22 years old, five feet five inches tall, of dark complexion with dark grey eyes.
The 16th regiment was formed in 1861 and served until July of 1864. ...